Motoren-fabrik-deutz



(No Model.) l v N. A. OTTO. IGNITING APPARATUS FOR GAS OROIL MOTORENGINES.

No. 424,345. Patented Mar. 25, v1890.

UNITED STATES PATENT OFFICE.

NICOLAUS AUGUST OTTO, OF COLOGNE, PRUSSIA, ASSIGNOR TO THE GAS-MOTOREN-FABRIKDEUTZ, OF DEUTZ, GERMANY.

IGNITING APPARATUS FOR GAS OR OIL MO-TOR ENGINES.

SPECIFICATION forming part of Letters Patent No. 424,345, dated March25, 1890.

Application tiled December 19, 1889. Serial No. 334,292. (No model.)Patented in Italy December 1'7, 1889, LII, 180,. and in England November22, 1889,No.18,746.

To all whom, t may concern:

Be it known that I, NicoLAUs AUGUST OTTO, a citizen of Prussia, residingat Cologne, in the Empire of Germany, have invented a new and usefulImprovement in Igniting Apparatus for Gas and Oil Motor Engines, (forwhich I have obtained a patent in Italy, dated December 17, 1889, Vol.LII, No. 180, and in Great Britain by an application for patent, whichpatent, when granted, will bear date November 22, 1889, No. 18746,) ofwhich the following is a specification.

This invention relates to the construction of igniting apparatus for gasand oil motor engines, consisting of metal tube heated by an externalflame and surrounded by a casing such as was described in thespecification to Patent No. 386,929, of July 3l, 1888.

According to the present improvement, instead of effecting the heatingof the metal tube by a gas-flame, it is heated by a flame ofpetroleum-vapor. For this purpose the apparatus is constructed as shownon the accompanying drawings, in which- Y Figure 1 shows a longitudinalsection of the apparatus; and Fig. 2, a cross-section on line X X, Fig.l.

The heated igniting-tube h, which ignites the cylinder charge when itsinterior is put in communication therewith in the known manner, is fixedin the passage of casing b, leading to the. engine-cylinder C. At apoint by preference as near the cylinder as possible a passage b isformed extending partially round it, and between the two open ends ofthe passage an opening is formed on the under side of the casingsurrounded by a branch tube f. To the one end of the passage b isattached a pipe a, communicating with a supply of liquid petroleum, andto the other end is attached a pipe d, terminating in a nozzle facingthe branch tube f, in w-hich is fixed a transverse metal rod g.

Assuming the casing b to be in a heated condition, the liquid petroleumentering the passage b of the casing from pipe a will become volatilizedby the heat, and the vapor issuing with force from the nozzle of d Willcarry the requisite air-supply along with it through the branch tube f,and in entering into combustion the resulting llame produced in thespace cwill impinge upon the ignitingtube h and the interior of thecasing b, thereby highly heating these parts and the passage b', inwhich the liquid petroleum is vaporized. The intimate mixture of the jetof petroleumvapor with the air carried by it is insured by causing thejet of vapor to impinge upon the rod g, whereby it is efectually openedout.

For heating the igniting-tube and casing in the rst instance on startingthe engine an oil spirit-lamp is temporarily placed under the branchtube f.

By arranging the passage b and jet d as close as possible to thecylinder the heat is Vconcentrated at that point and acts in the mostadvantageous manner in tiring the charges.

Having thus described the nature of my invention and the best means Iknow for carrying the same into practical ett'ect,l claim- In apparatusfor igniting the charges of gas or oil motor engines, the combination,With the igniting-tube h, of a tubular casing b, having a channel b',into which liquid petroleum is introduced through a pipe a, a branchtube f,with metal rod g,and a pipe d, with nozzle through whichpetroleum-vapor formed in the passage b issues into the branch tube f,and in mixing with the necessary air enters, into combustion within thecasing, so as to heat this and the tube 7L at a point near theenginecylinder, substantially as described.

In testimony whereof I have signed my name to this specification, in thepresence of two subscribing Witnesses, this l1th day of December, A. D.1889.

NIOOLAUS AUGUST OTTO.

Witnesses:

PET. LANGEN,

Jlflheim a. R. WILH. SPICKER, Kln.

